GB2004648A - Field fan filter for seismic signals - Google Patents

Field fan filter for seismic signals

Info

Publication number
GB2004648A
GB2004648A GB7836024A GB7836024A GB2004648A GB 2004648 A GB2004648 A GB 2004648A GB 7836024 A GB7836024 A GB 7836024A GB 7836024 A GB7836024 A GB 7836024A GB 2004648 A GB2004648 A GB 2004648A
Authority
GB
United Kingdom
Prior art keywords
pairs
summing
clock
charge
taking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7836024A
Other versions
GB2004648B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Standard Oil Co
Original Assignee
Standard Oil Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Oil Co filed Critical Standard Oil Co
Publication of GB2004648A publication Critical patent/GB2004648A/en
Application granted granted Critical
Publication of GB2004648B publication Critical patent/GB2004648B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
    • G01V1/364—Seismic filtering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
    • G01V1/20—Arrangements of receiving elements, e.g. geophone pattern

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

Apparatus for fan filtering seismic data in the field comprising inputs for receiving signals from each seismometer 1-12 in a group, summing amplifiers 13-18 for summing the received signals by pairs, charge-coupled device delay lines 19-24 for providing two different delays to each of the summed pairs, amplifiers 25-30 for taking the difference of each of the two delayed signals from each summed pair, and means for weighting and summing the outputs of all pairs. The time delays of each of the charge-coupled device delay lines are proportional to and controlled by a single clock, which can be time- variable. The clock may be held at a single frequency during the taking of a given record, but in the preferred embodiment the clock is varied during recording to provide a narrower pass band of apparent velocities for deeper reflections than for the shallow reflections. <IMAGE>
GB7836024A 1977-09-21 1978-09-07 Field fan filter Expired GB2004648B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83510077A 1977-09-21 1977-09-21

Publications (2)

Publication Number Publication Date
GB2004648A true GB2004648A (en) 1979-04-04
GB2004648B GB2004648B (en) 1982-09-22

Family

ID=25268577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7836024A Expired GB2004648B (en) 1977-09-21 1978-09-07 Field fan filter

Country Status (4)

Country Link
CA (1) CA1128189A (en)
DE (1) DE2841125A1 (en)
FR (1) FR2404234A1 (en)
GB (1) GB2004648B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2489530A1 (en) * 1980-09-02 1982-03-05 Mobil Oil Corp SEISMIC EXPLORATION DEVICE USING PRESSURE AND SPEED DETECTORS
US4935903A (en) * 1989-05-30 1990-06-19 Halliburton Geophysical Services, Inc. Reinforcement of surface seismic wavefields
US4937793A (en) * 1989-05-30 1990-06-26 Halliburton Geophysical Services, Inc. Processing method for marine seismic surveying utilizing dual streamers
US4979150A (en) * 1989-08-25 1990-12-18 Halliburton Geophysical Services, Inc. System for attenuation of water-column reverberations
US5621699A (en) * 1995-07-07 1997-04-15 Pgs Ocean Bottom Seismic, Inc. Apparatus and method of calibrating vertical particle velocity detector and pressure detector in a sea-floor cable with in-situ passive monitoring
US5754492A (en) * 1996-02-12 1998-05-19 Pgs Tensor, Inc. Method of reverberation removal from seismic data and removal of dual sensor coupling errors
US5774416A (en) * 1995-04-07 1998-06-30 Pgs, Tensor, Inc. Method and device for attenuating water column reverberations using co-located hydrophones and geophones in ocean bottom seismic processing
EP2751599A4 (en) * 2011-11-18 2016-06-29 Geco Technology Bv Coherent noise attenuation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274541A (en) * 1963-02-15 1966-09-20 Texas Instruments Inc Seismic velocity filtering
US3576522A (en) * 1966-08-01 1971-04-27 Continental Oil Co Method and apparatus for analog velocity filtering
CA970461A (en) * 1971-07-29 1975-07-01 Atlantic Richfield Company Velocity selective array
US3877056A (en) * 1973-01-02 1975-04-08 Texas Instruments Inc Charge transfer device signal processing system
US4035628A (en) * 1975-10-24 1977-07-12 Westinghouse Electric Corporation Analog transversal filtering and correlation with progressive summation of analog signals

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2489530A1 (en) * 1980-09-02 1982-03-05 Mobil Oil Corp SEISMIC EXPLORATION DEVICE USING PRESSURE AND SPEED DETECTORS
US4486865A (en) * 1980-09-02 1984-12-04 Mobil Oil Corporation Pressure and velocity detectors for seismic exploration
US4935903A (en) * 1989-05-30 1990-06-19 Halliburton Geophysical Services, Inc. Reinforcement of surface seismic wavefields
US4937793A (en) * 1989-05-30 1990-06-26 Halliburton Geophysical Services, Inc. Processing method for marine seismic surveying utilizing dual streamers
US4979150A (en) * 1989-08-25 1990-12-18 Halliburton Geophysical Services, Inc. System for attenuation of water-column reverberations
US5774416A (en) * 1995-04-07 1998-06-30 Pgs, Tensor, Inc. Method and device for attenuating water column reverberations using co-located hydrophones and geophones in ocean bottom seismic processing
US5621699A (en) * 1995-07-07 1997-04-15 Pgs Ocean Bottom Seismic, Inc. Apparatus and method of calibrating vertical particle velocity detector and pressure detector in a sea-floor cable with in-situ passive monitoring
US5754492A (en) * 1996-02-12 1998-05-19 Pgs Tensor, Inc. Method of reverberation removal from seismic data and removal of dual sensor coupling errors
EP2751599A4 (en) * 2011-11-18 2016-06-29 Geco Technology Bv Coherent noise attenuation
US9575196B2 (en) 2011-11-18 2017-02-21 Westerngeco L.L.C. Coherent noise attenuation

Also Published As

Publication number Publication date
CA1128189A (en) 1982-07-20
DE2841125A1 (en) 1979-03-29
FR2404234A1 (en) 1979-04-20
GB2004648B (en) 1982-09-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee